Comments on: Plywood Helicopter (Jan, 1949) http://blog.modernmechanix.com/2008/05/28/plywood-helicopter/ Yesterday's tomorrow, today. Fri, 10 Feb 2012 14:33:22 +0000 hourly 1 http://wordpress.org/?v=3.1.4 By: Firebrand38 http://blog.modernmechanix.com/2008/05/28/plywood-helicopter/comment-page-1/#comment-1072609 Firebrand38 Tue, 17 Nov 2009 23:10:47 +0000 http://blog.modernmechanix.com/?p=4508#comment-1072609 Larry: http://www.aviastar.org/helicopters_eng/landgraf.php Didn't catch on, but here are some patents by the inventor: http://www.google.com/patents?id=KvlhAAAAEBAJ&printsec=drawing&zoom=4#v=onepage&q=&f=false http://www.google.com/patents?id=aT9sAAAAEBAJ&zoom=4&pg=PA3#v=onepage&q=&f=false http://www.google.com/patents?id=TLBHAAAAEBAJ&pg=PA1&dq=Landgraf&source=gbs_selected_pages&cad=2#v=onepage&q=Landgraf&f=false http://www.google.com/patents?id=lFJuAAAAEBAJ&pg=PA1&dq=Landgraf&source=gbs_selected_pages&cad=2#v=onepage&q=&f=false @Marc B.: That's funny, the people who fly it think it's safe and reliable http://www.marinecorpstimes.com/news/2007/10/marine_osprey_071014/ Larry: http://www.aviastar.org/helico.....ndgraf.php

Didn’t catch on, but here are some patents by the inventor:

http://www.google.com/patents?.....38;f=false
http://www.google.com/patents?.....38;f=false
http://www.google.com/patents?.....38;f=false
http://www.google.com/patents?.....38;f=false

@Marc B.: That’s funny, the people who fly it think it’s safe and reliable http://www.marinecorpstimes.co.....ey_071014/

]]> By: Larry Bialecki http://blog.modernmechanix.com/2008/05/28/plywood-helicopter/comment-page-1/#comment-1072608 Larry Bialecki Tue, 17 Nov 2009 22:44:31 +0000 http://blog.modernmechanix.com/?p=4508#comment-1072608 Does anyone have additional information about this design? Might be interesting to build as a Light Sport Aircraft. Does anyone have additional information about this design? Might be interesting to build as a Light Sport Aircraft.

]]> By: Marc B. http://blog.modernmechanix.com/2008/05/28/plywood-helicopter/comment-page-1/#comment-1055958 Marc B. Wed, 28 May 2008 19:16:26 +0000 http://blog.modernmechanix.com/?p=4508#comment-1055958 Should be at least as safe and reliable as the V-22 Osprey Should be at least as safe and reliable as the V-22 Osprey

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